Robert miehle



-N M d l; e R. MIBHLB.

` INKING MEGHANISM FOR PRINTING PRESSES. vNo. 558,594.

Patented Apr. 21, 1896.

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M. PHOTO-LITE@ WASHVNGYDMDC Nrrn STATES ATENT `Prien ROBERT MIEHLE, OF CHICAGO, ILLINOIS, ASSIGNOR TO TI-IE MIEIILE PRINT- ING PRESS AND MANUFACTURING COMPANY, OF SAME PLACE.

INKING MECHANISIVI FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 558,594, dated April 21, 1896.

Application filed August 3, 1894.

To @ZZ whom t may concern:

Be it known that I, ROBERT MIEHLE, of Chicago,in the county of'Cook and State of Illinois, have invented certain new and useful Improvements in Inking Mechanism for Printing-Presses; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

rThis invention relates to the inking apparatus of that class of cylinder printing-presses having a reciprocating ink-table and distributing-rollers arranged angularly or otherwise, as desired, upon the machine-frame, and adapted to act upon the ink-table to distribute the ink thereon.

The object of my invention is to provide improved means for imparting an initial rotary motion to the distributing-rollers with a velocity' or surface speed nearly equal to that of the ink-table.

The subject-matter of the invention is generally similar to that of my pending` application, Serial No. 355,110, led June ll, 1890.

In the accompanying drawings, Figure lis a fragmentary side elevation of a structure embodying my invention in one form. Fig. 2 is a plan view thereof. Fig. 3 is a detail of one of the top caps for the roller journalbearings.

In said drawings, A designates the machine-frame, B the reciprocating ink-table, and C the angle-rollers which serve to distribute the ink on the table as the latter passes beneath them. As herein shown, said rollers are four in number and are arranged in two sets which are inclined slightly in opposite directions from an intermediate transverse line, the two rollers of each set being parallel to each other. The exact number and arrangement of the rollers is not, however, of importance so far as my present invention is concerned.

C C designate friction rollers or collars which are rigidly secured to the shafts c of the distributing-rollers adjacent to the composition body portions C2 thereof. Said fric- Serial No. 519,333. (No model.)

tion-collars are of equal diameter with the 5o as herein shown, rests upon an outer support- 6o ing-ledge b2 of the arm B and is secured at its front end by rivets b3 to a transverserib b4, which extends beneath and supports said ledge, The rear end of the strap B2 is riveted to the flattened end of an adjusting-screw B3,

which ext-ends through an aperture in a lateral lug b5 at the rear end of the arm, and is provided with an adjusting-nut b engaging the rear face of said lug. By screwing up the nut b5 the strap may be thus kept taut 7o and made to always lie smoothly upon the ledge b2. The upper surface of the latter is herein shown as curved downwardly from its center toward each end, so as the bring the center of the friction-surface b of the strap slightly above the surface of the ink-table B, while its ends are depressed beneath the same. By reason of this construction the engagement between the friction-surface and the collars C is effected and released gradually, and the vto adjusting device at the rear end of the strap is conveniently maintained below the level of the table and out of contact with the collars C. The top surface of the main body of the arm B', aside from the ledge b2, is also 8 5 herein shown as arranged beneath the surface of the table B, out the way of the inkrollers, and thc strap B2 is shown as made narrower at its rear end, so that it clears the side of the arm in dropping to engage the ad- 9o justing-bolt B3.

The ends of the shafts c of the ink-rollers C are herein shown as j ournaled in U shaped bearings A', pivotally secured in the frame A in a familiar manner. As a further improvement, however, and for the purpose of preventing tlie ink-rollers C from being thrown up by the contact of the friction-surface l) The 55 with their collars C', I have in this instance shown the bearings A as further provided with top caps A2, which rest on the upper surface of the trunnions or journals c and serve to prevent free upward movement of the same.

As herein shown, the caps A2 are provided with upwardly-projecting stems CL, which eX- tend through apertures in a stationary horizontal bar A:v3 and are free to slide therein. -Between the caps A2 and the lower side of the bar A3 are located coiled springs a', which n ormally hold the rollers down but permit them to yield upwardly under any undue pressure. Said springs are herein shown as placed around the stems a.

As the arm B passes rapidly beneath the collars C they will be held yieldingly against the friction-surface b of the strap B2 with sufficient pressure to effect the rotary movement of the rollers, and any lifting or throwing up of the rollers under the impact of the arm B, with a resulting decrease in the rotative impulse (as may occur when the bearings for the roller-shafts c are left open at their tops) is prevented. rlhe springs a also permit the caps A2 to be lifted by means of knobs or handles a2, secured to the upper ends 'of the stems ci, when it is desired to remove the rollers C from the machine or to replace them therein. Furthermore, the entire set of upper caps A2 may, if desired, be removed by removing the bar A3, the latter being herein shown as detachably secured by nuts as to upwardly-projecting studs A4 of the frame A.

I claim as my invention- I. The combination with distributing-rollers provided with friction disks or collars, of a reciprocating ink-table provided with a frictional bearing-surface adapted to engage said collars, and means for holding said rollf ers down in position for engagement with said frictional bearing-surface, substantially as described.

2. The combination with distributing-rollers provided with friction disks or collars, of a reciprocating ink table provided with a frictional bearing-surface adapted to engage said collars, and bearings for the adjacent ends of the roller-shafts provided with springpressed caps adapted to hold the rollers yieldingly in place, substantially as described.

The combination with distributing-roll ers provided with friction disks or collars, of a reciprocating ink table provided with a frictional bearing-surface adapted to engage said rollers, U-shaped bearings for the adj acent ends of the roller-shafts provided with caps having upwardly-extending stems engaging apertures in a stationary bar, and springs interposed between the caps and the bar, substantially as described.

4E. The combination with distributing-rollers provided with friction disks or collars, of a reciprocating ink table provided with a frictional bearing-surface adapted to engage the collars, U-shaped bearings for the adjacent ends of the roller-shafts provided with caps having upwardly-projecting stems, a stationary horizontal bar dctachably secured, to the frame and provided with guide-apertures for said stems, springs interposed between the caps and the bar, and enlargements on the upper ends of the stems for lifting the same, substantially as described.

In testimony that I claim the foregoing as invention I atlix my signature in presence of two witnesses.

ROBERT MIEHLE.

lVitnesses:

HENRY W. CARTER, WM. L. HALL. 

